Sunday, 18 May 2014

Crack Linux root password

Cara simple untuk dapatkan password root kalau terlupa password..? untuk SLES hokkaaayy...

Cara init=/bin/bash recovery:

  1. On the boot menu select the first option “SUSE Linux enterprise server” and press‘e’ for edit
    GRUB boot menu of SUSE Linux
  2. On the second menu select the kernel option and press ‘e’ for edit
    SUSE Linux boot menu
  3. type ‘ init=/bin/bash’ (leave empty space at the begging), and press ‘Enter’ and then ‘b’ to boot with that option
    SUSE Linux kernel edit
  4. The system will boot with the root user logged on, type ‘passwd’ to change the password and input your new password, or just press ‘Enter’ for no password (blank password)
    SUSE Linux change password
Reboot the server and log on with your new password.

note: credit to: http://adminramble.com/


Tuesday, 13 May 2014

Defects in linux operating system (Linux kernel vulnerabilities) -part 1

Is Linux secure enough? Nothing can beat security in Linux? Do you think Linux is free from defects? Well, u'd better think again... may this post will reveal what flaws exist in Linux operating system. Jengg..jeenggg..
(I will try to KISS with u- Keep it short n Simple with u to discover this topic.)


What is kernel? Imagine a nut/seed in a fruit. Well, the nut/seed..? that's what i said, is a kernel! Its a program stands in the central core of a computer operating system.It has complete control over everything in the system. Kernal also is the first part of the OS to load into memory during booting.
VUlnerabilities in kernel happend when there are bugs in the kernal program. Each vulnerabilities can be ofted exploited in many ways!

LIst of bugs in Linux kernel (founded in 2011):
a. Missing pointer check
b. Missing Permission Check
c. Buffer overflow
d. Integer overflow
e. Uninitialized data
f. Memory Mismanagement
g. Miscellaneous



Do you know?

1. Enumeration tools can be use to againts Linux system
2.Nessus can be use to discover weakness exist in Linux system!

credit to:
- http://pdos.csail.mit.edu/papers/chen-kbugs.pdf
- www.wikipedia.org